Non-linear adder

Details Non-linear adder Non-linear adder

1983-06-28

1985-10-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04Q 1104

Patent

active

045478783

ABSTRACT:
This disclosure depicts a non-linear adder circuit for teleconferencing. A pre-determined number of most significant bits (MSB) is utilized from a first PCM signal to select one of a plurality of PROMs. Each of the PROMs receives a second predetermined number of bits, other than the bits used for selecting from the first PCM signal, and the predetermined number of bits from a second PCM signal. The unique address locations within the PROMs of the first and second PCM signals are stored. From this address location a third PCM signal is outputted which is a non-linear addition of the first and second PCM signals.

REFERENCES:
patent: 4097694 (1978-06-01), Miyazaki
patent: 4215247 (1980-07-01), Lambert
patent: 4274155 (1981-06-01), Funderburk et al.
patent: 4325139 (1982-04-01), van Dine
patent: 4387457 (1983-06-01), Munter
patent: 4389720 (1983-06-01), Baxter et al.
patent: 4393496 (1983-07-01), Zeihaeg
patent: 4416007 (1983-11-01), Huizinga et al.
patent: 4425478 (1984-01-01), van Mil et al.
patent: 4430734 (1984-02-01), Hubbard
GTD-4600 Network Description, Jacob, Mar. 1978.

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